diff options
| author | Jeffle Xu <jefflexu@linux.alibaba.com> | 2021-11-25 15:05:26 +0800 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2021-12-14 11:09:36 +0100 |
| commit | 98046f7486db723ec8bb99a950a4fa5f5be55cd1 (patch) | |
| tree | 7519bed89786733b58a07e1baff792bc5b7c9455 | |
| parent | 780b1b959f9bd959e1aca450e9fee0e2c00b31ad (diff) | |
| download | lwn-98046f7486db723ec8bb99a950a4fa5f5be55cd1.tar.gz lwn-98046f7486db723ec8bb99a950a4fa5f5be55cd1.zip | |
fuse: support per inode DAX in fuse protocol
Expand the fuse protocol to support per inode DAX.
FUSE_HAS_INODE_DAX flag is added indicating if fuse server/client
supporting per inode DAX. It can be conveyed in both FUSE_INIT request and
reply.
FUSE_ATTR_DAX flag is added indicating if DAX shall be enabled for
corresponding file. It is conveyed in FUSE_LOOKUP reply.
Signed-off-by: Jeffle Xu <jefflexu@linux.alibaba.com>
Reviewed-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
| -rw-r--r-- | include/uapi/linux/fuse.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/uapi/linux/fuse.h b/include/uapi/linux/fuse.h index 3f0ea63fec08..d6ccee961891 100644 --- a/include/uapi/linux/fuse.h +++ b/include/uapi/linux/fuse.h @@ -193,6 +193,7 @@ * - add flags2 to fuse_init_in and fuse_init_out * - add FUSE_SECURITY_CTX init flag * - add security context to create, mkdir, symlink, and mknod requests + * - add FUSE_HAS_INODE_DAX, FUSE_ATTR_DAX */ #ifndef _LINUX_FUSE_H @@ -351,6 +352,7 @@ struct fuse_file_lock { * FUSE_INIT_RESERVED: reserved, do not use * FUSE_SECURITY_CTX: add security context to create, mkdir, symlink, and * mknod + * FUSE_HAS_INODE_DAX: use per inode DAX */ #define FUSE_ASYNC_READ (1 << 0) #define FUSE_POSIX_LOCKS (1 << 1) @@ -386,6 +388,7 @@ struct fuse_file_lock { #define FUSE_INIT_RESERVED (1 << 31) /* bits 32..63 get shifted down 32 bits into the flags2 field */ #define FUSE_SECURITY_CTX (1ULL << 32) +#define FUSE_HAS_INODE_DAX (1ULL << 33) /** * CUSE INIT request/reply flags @@ -468,8 +471,10 @@ struct fuse_file_lock { * fuse_attr flags * * FUSE_ATTR_SUBMOUNT: Object is a submount root + * FUSE_ATTR_DAX: Enable DAX for this file in per inode DAX mode */ #define FUSE_ATTR_SUBMOUNT (1 << 0) +#define FUSE_ATTR_DAX (1 << 1) /** * Open flags |